mp20049 ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 1 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp20049 is an ultra-low noise, low-dropout, high psrr linear regulator. fixed output voltage options are available between 1.2v to 4.5v with 1% accuracy while operating from a +2.3v to +6v input. it is designed to deliver up to 150ma of load current. dropout voltage is only 60mv at full load. the mp20049 uses an internal pmos as the pass element, which consumes 50a supply current at no load condition and is suitable for battery-power devices. new innovative design techniques enable the mp20049 to achieve ultra-low output voltage noise of only 16 v rms without a noise bypass capacitor. the mp20049 is designed and optimized to work with low value, low cost ceramic capacitors. it typically requires only 1 f of output capacitance for stability with any load. the mp20049 features current limit and over temperature protection and is available in a tiny 4-ball 0.8x0.8mm wlcsp package. features ? linear regulator in 0.8x0.8mm wlcsp ? input voltage range: 2.3v to 6v ? up to 150ma output current ? 16 v rms output noise (100hz to 100khz) with no bypass capacitor required ? high psrr: ? 78db @1khz ? 55db @100khz ? low dropout: ? 50mv @120ma load ? 60mv @150ma load ? stable with 1 f ceramic capacitor for any load ? very fast line/load transient response ? current limit and thermal protection applications ? cellular mobile phones ? digital cameras ? handheld and battery-powered equipment ? wireless lan ? post dc-to-dc regulation ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. typical application vin vout en gnd v in mp20049 v out
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 2 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information part number* package vout(v) top marking free air temperature (t a ) mp20049dc-2.8** wlcsp (0.8x0.8mm) 2.8 tco -40 c to +125 c * for tape & reel, add suffix ?z (e.g. mp20049dc?z); for rohs, compliant packaging, add suffix ?lf (e.g. mp20049dc?lf?z). ** contact factory for other fixed output options. ordering guide** package reference vin vout en gnd top view (not to scale) a b 1 2 0.8x0.8mm wlcsp absolute maxi mum ratings (1) supply input voltage ................................ 6.5v continuous power dissipation (t a = +25c) (2) wlcsp ................................................. 0.37w storage temperature range .... -65c to 150c lead temperature (soldering, 10sec) ....300c esd susceptibility (3) hbm (human body mode) ..........................2kv mm (machine mode) ................................ 200v recommended operating conditions (4) supply input voltage ......................2.3v to 6.0v enable input voltage ........................0v to 5.5v operating junct. temp (t j )...... -40 c to +125 c thermal resistance (5) ja jc wlcsp.................................. 330 ..... n/a .. c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to- ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max)-t a )/ ja . exceeding the maximum allowable powe r dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) devices are esd sensitive. handling precaution recommended. 4) the device is not guaranteed to function outside of its operating conditions. 5) measured on jesd51-7, 4-layer pcb.
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 3 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. electrical characteristics v in = (v out + 0.5v) or 2.5 v (whichever is greater), en = v in , i out = 10ma, c in = c out = 1f t a = 25c, unless otherwise noted. notes: 6) dropout voltage is defined as the input to output different ial when the output voltage drops 100mv below its nominal value. 7) line regulation= () in(max ) in(min) out v out v in(min) out(nom) in max vv (% / v) vv v ?? ?? ?? ?? ? ?? ? ?? 8) load regulation= ) nom ( out ) min ( out ) max ( out ] i [ out ] i [ out v * ] i i [ v v ) min ( out ) max ( out ? ? parameter symbol condition min typ max units input voltage range v in 2.3 6 v maximum output current i max continuous 150 ma output voltage accuracy ? v out i out = 10ma -1 +1 % current limit i lim r load =1 ? 165 250 380 ma no load(25c) 40 55 70 a ground current i q no load(-40c mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 4 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions pin# name description a1 vin regulator input supply. bypass vin to gnd with a 1f or greater capacitor. b2 gnd ground pin. b1 en enable input. drive en high to turn on the regulator; drive it low to turn off the regulator. for automatic startup, connect en to vin. a2 vout regulated output voltage. connect a 1f or greater output capacitor between vout and gnd.
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 5 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =3.3v, v out =2.8v, c in =c out =1f, t a =25c, unless otherwise noted quiescent current vs. temperature -40 -20 0 20 40 60 80 100 temperature( o c) quiescent current vs. input voltage dropout voltage vs. temperature -40-20 0 20406080100 temperature( o c) dropout voltage(mv) dropout voltage vs. output current output current(ma) dr opout v ol t a g e (mv ) en threshold vs. input voltage 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 input voltage(v) input voltage(v) v en (v) en threshold vs. temperature temperature( o c) v en (v) current limit vs. temperature -40 -20 0 20 40 60 80 100 temperature( o c) current limit(ma) input voltage (v) current limit vs. input voltage current limit(ma) input voltage (v) line regulation -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 output voltage accuracy(%) 0 10 20 30 40 50 60 70 0 20 40 60 80 100 120 3 3.5 4 4.5 5 5.5 6 0 10 20 30 40 50 60 70 80 i out =150ma 0 10 20 30 40 50 60 70 0 25 50 75 100 125 150 3 3.5 4 4.5 5 5.5 6 en high threshold en low threshold 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 -40 -20 0 20 40 60 80 100 en high threshold en low threshold 0 100 200 300 400 500 0 100 200 300 400 500 3 3.5 4 4.5 5 5.5 6 3 3.5 4 4.5 5 5.5 6 i out =0a i out =150ma
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 6 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performance characteristics ( continued ) v in =3.3v, v out =2.8v, c in =c out =1f, t a =25c, unless otherwise noted load regulation -0.06 -0.04 -0.02 0.00 0.02 0.04 0.06 output current (ma) output voltage accuracy vs. temperature i out =150ma -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 -40 -20 0 20 40 60 80 100 -20 0 20 40 60 80 100 10 10 3 10 5 frequency (hz) psrr (db) region of stable c out esr vs. output current 0.1 1 10 100 output current (ma) 10 2 10 4 10 6 10 7 psrr i out =10ma, 50ma, 100ma, 150ma f ranges from 10hz to 10mhz 0 25 50 75 100 125 150 0 25 50 75 100 125 150 unstable range stable range i out =10ma i out =50ma i out =150ma i out =100ma
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 7 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performance characteristics ( continued ) v in =3.3v, v out =2.8v, c in =c out =1f, t a =25c, unless otherwise noted 100ms/div line transient v in =2.5v to 5v, i out =60ma, with resistor load load transient i out =1ma to 65ma, with resistor load over current protection entry 100ms/div over current protection recovery i out 100ma/div i out 100ma/div v en 5v/div v out 2v/div i out 100ma/div v en 5v/div v out 100mv/div i out 20ma/div v out 2v/div i out 200ma/div v in 2v/div v out 2v/div i out 200ma/div v in 2v/div v out 2v/div v in 2v/div v out 2v/div i out 200ma/div v in 2v/div v out 2v/div i out 100ma/div v in 2v/div v out 2v/div input power start up i out =150ma, with resistor load en start up i out =150ma, with resistor load en shutdown i out =150ma, with resistor load input power shutdown i out =150ma, with resistor load 20ms/div 20ms/div 100ms/div over current protection steady state i out 50ma/div v in 2v/div v out 100mv/div
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 8 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. operation the mp20049 is an ultra low noise, low dropout, low quiescent current and high psrr linear regulator for space-restricted applications. it is intended for use in devices that require very low voltage, and ultra-small footprint, such as mobile phone and mp3 players. the mp20049 uses an internal pmos as the pass elements and features internal thermal shutdown and internal current limit circuits. dropout voltage dropout voltage is the minimum input to output differential voltage required for the regulator to maintain an output voltage within 100mv of its nominal value. it determines the available end- of-life battery voltage in battery-powered systems. for the p-channel mosfet pass element, the dropout voltage is a function of drain to source on resistance. because the p- channel mosfet pass element behaves as a low-value resistor, the dropout voltage of mp20049 is very low. under voltage lockout the mp20049 has an internal under-voltage lockout circuit that disables the device when the input voltage is less than approximately 2.3v. this ensures that the input and the output of the mp20049 behave in a predictable manner during input power-up. enable on/off the mp20049 can be switched on or off by a logic input at the en pin. a high voltage at this pin will turn the device on. when the en pin is low, the regulator output is off. the en pin should be tied to vin to keep the regulator output always on if the application does not require the shutdown feature. do not float the en pin. current limit and thermal protection the mp20049 includes an independent current limit structure which monitors and controls the p-channel mosfet?s gate voltage to limit the guaranteed maximum output current to 150ma. thermal protection turns off the p-channel mosfet when the junction temperature exceeds +150oc, allowing the ic to cool. when the ic?s junction temperature drops by 20oc, the pmos will be turned on again. thermal protection limits total power dissipation in the mp20049. for reliable operation, junction temperature should be limited to 125oc maximum.
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 9 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. functional block diagram 1.23v reference enable control 1.23v error amp vref filter thermal sensor gnd v out en v in figure 1?functional block diagram
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp mp20049 rev. 1.1 www.monolithicpower.com 10 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. application information power dissipation the power dissipation for any package depends on the thermal resistance of the case and circuit board, the temperature difference between the junction and ambient air, and the rate of airflow. the power dissipation across the device can be represented by the equation: p = (v in - v out ) i out the allowable power dissipation can be calculated using the following equation: p (max) = (t junction - t ambient ) / ja where (t junction - t ambient ) is the temperature difference between the junction and the surrounding environment, ja is the thermal resistance from the junction to the ambient environment. connecting the gnd pin of mp20049 to ground with a large ground plane will help the channel heat away. input capacitor selection using a capacitor whose value is >1 f on the mp20049 input and the amount of capacitance can be increased without limit. larger values will help to improve line transient response with the drawback of increased size. ceramic capacitors are preferred, but tantalum capacitors may also suffice. output capacitor selection the mp20049 is designed specifically to work with very low esr ceramic output capacitor in space-limiting and performance consideration. output capacitor of larger values will help to improve load transient response and reduce noise with the drawback of increased size. for the application circuit, the mp20049 requires a minimum capacitance of 0.7f with an esr of 1 ? or less. output noise and psrr for mp20049, an internal 50pf bypass capacitor with new innovative structure reduces output noises greatly, without the need for an external bypass capacitor. the power supply rejection is 75db at 10khz and 55db at 100khz.
mp20049 ? ultra-low noise, high psrr 150ma linear regulator in 0.8x0.8mm wlcsp notice: the information in this document is subject to change wi thout notice. please contact m ps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp20049 rev. 1.1 www.monolithicpower.com 11 10/22/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information wlcsp top view a 1 2 b bottom view 0.78 0.86 0.78 0.86 0.40 bsc pin 1 id marking 0.40 0.20 recommended land pattern note: 1) all dimensions are in millimeters. 2) ball coplanarity shall be 0.05 millimeter max. 3) jedec reference is mo-211, variation aa. 4) drawing is not to scale. 0.40 bsc pin 1 id index area side view 0.17 0.23 0.40 0.24 0.28 0.55 0.65
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